DR. WILLIAM SAMUEL YANCY JR. M.D., M.H.S.
NPI 1598851974
Internal Medicine in Durham, NC
About Dr. William Samuel Yancy Jr. M.d., M.h.s. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILLIAM SAMUEL YANCY JR. M.D., M.H.S. (NPI 1598851974) is an individual internal medicine provider in Durham, North Carolina, licensed in North Carolina (2000-01339) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS, is affiliated with Duke University Hospital, and is a graduate of Brody School Of Medicine At East Carolina University (1995).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. William Samuel Yancy Jr. M.d., M.h.s. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show William Yancy reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Durham, NC 27704
- Reassigned Medicare billing, North Carolina enrollment
- Also billed through NPI 1497912232 (North Carolina)
- 1,482 clinicians in this Medicare group
Durham, NC 27704
- Reassigned Medicare billing, North Carolina enrollment
- 3,671 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 6
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Duke University Hospital
Acute Care Hospitals · Durham, NCPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 27704 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
DURHAM, NC 27704
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is William Yancy's NPI number?
The NPI number for William Yancy is 1598851974. It was assigned to this individual provider in the NPPES registry on October 5, 2006.
Where is William Yancy located?
William Yancy practices at 4220 N Roxboro St 2nd Floor, Durham, NC 27704. The listed phone number is (919) 684-8111.
What is William Yancy's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is William Yancy enrolled in Medicare?
Yes. William Yancy is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for William Yancy's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Yancy reassigns Medicare benefits to 2 organizations: Duke University Health System, Inc. (Durham, NC) and Duke Health Integrated Practice, Inc (Durham, NC). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for William Yancy's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Yancy accept?
Health plans from Ambetter Health, Ambetter from Absolute Total Care, Ambetter of North Carolina, Ambetter of Tennessee and Blue Cross and Blue Shield of NC and 1 other insurer list William Yancy as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is William Yancy affiliated with any hospitals?
According to CMS data, William Yancy is affiliated with Duke University Hospital.
When was this NPI record last updated?
The NPPES record for William Yancy was last updated on May 14, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.